Signaling-horn.



M. S. PURPLE.

SIGNALING 'HORN. APPLICATION FILEDAUG. 10, 1912.

Patented July 18,1916;

fi e as amig UNTTED STATES PATENT OFFICE.

MAYO S. PURPLE, OF EAST HAMPTON, CONNECTICUT, ASSIGN OR TO THE BEVIN BROTHERS MANUFACTURING COMPANY, OF EAST HAMPTON, CONNECTICUT, A

CORPORATION OF CONNECTICUT.

SIGNALING-HORN.

Specification of Letters Patent.

Patented July 18, 1916.

Application filed August 10, 1912. Serial No. 714,384.

To all whom it may concern..-

'Be it known that I, MAYO S. PURPLE, a citizen of the UnitedStates, and a resident of East Hampton, in the county of Middleany one skilled in the art, may make and use the same. V

The invention relates to and more particularly. to a type used in connection with automobiles, motor boats, etc., and refers more specifically to the, bell through which the reverberations of the horn mechanism are transmitted.

Referring to the drawings: Figure 1 is a perspective view embodying the invention. Fig. 2 is a sectional view in enlarged scale through the bell. Fig. 3 is a sectional view of the hell with parts unassembled. Fig. 4 illustrates the parts assembled pressed up and locked together.

The invention is herein illustrated in conjunction with a horn of the electrical type wherein a motor mechanism vibrates a diaphragm. This mechanism forms no part of the present invention, however, which relates more specifically tothe horn or hell for transmitting the vibrations.

Hcretofore it has been common practice to use bells tapered and in other forms having a comparatively large orifice at the outer end with screens applied thereto to prevent the ingress of foreign materials. Such bells or horns are somewhat cumbersome and the sound transmitted is thrown directly in front of the horn or hell opening. As hereinafter specifically described, the present invention provides for delivering thesound in various directions and through perforations a circulation of air is maintained which provides against ingress of dust and dirt to the horn mechanism.

Oneof the objects of the present invention is toprovide a very simple and compact type of hell with great rigidity and yetof very light construction.

Referring to the drawings the numeral 1 denotes the casing of the motor mechanism, which motor mechanism is not specifically shown herein.

' To the casing is attached a tapered tube;

or sleeve 2 to which is secured the terminal signaling hornsportion or bell 3. The tapered sleeve 2 may be made of any desired size or length and is, of course, secured at one end to the casing containing the sound producing mechanism andatthe other end is secured to the terminal bell. The terminal hell 3 is composed of two semi-spheroidal parts 4:, 5, each of which is perforated as at 6, 7. These perforations 6, 7 arranged in the respective semi-spheroidal parts 4, 5 serve the double purpose of permitting sound radiation and the removal of dust and dirt which may enter through the main orifice 9. From the very form of the spheroidal bell section and with the orifice 9 as illustrated of lesser diameter than the neck 8, there will be a swirlmovement of the air within the bell which will discharge the particles of dust and dirt through the openings 6, 7. Thus, it is not essentialthat screens beemployed to prevent dirt entering the tubular part 2. The bell section 4: has a neck 8 formed thereon of a suitable sizeto fit within the outer end of the tapered sleeve 2. The bell section 5 has an opening 9 arranged inthe same axial line with the opening through the neck 8.

The semi-spheroidal sections of the hell are drawn, cupped or spun up to the desired form as illustrated in; Fig. 3, with one section as, for instance, 5' ring 10 slightly larger in diameter than the lip or ring 11 of the section 4 sothat the lips may be passed one within the other. The two sections arethen assembled one overlying the other and submitted to the action of a press which forms upon the two overlapping edges a ring 12.0f annular form which, when the metal is closely compressed, gives a ring double the thickness of any other portion of the bell. The edge 13 is formed down closely against the shoulder 14 and the edge 15 is likewise formed down closely within the shoulder 16. When the parts annularring 12 thus formed provides not only an embellishment to the exterior of the bell but acts as a stiffener against crushing strains.

With this construction a bell may be formed of very light metal pressed up in any desired manner and the double thickhaving a lip or i are thus pressed firmly together, the c the bell and its central portion. This serves as a guard to insure the parts against bending and collapse. As the device is constructed of very light metal, this doubling and bending of the metal at the central portion and providing a substantial and wide fiat annular ring surface is a veryeificient stiffener.

The perforations 6 and 7 provide for the circulation of air through the bell preventing the lodging of dust and foreign material therein and they also serve to give a proper vibration and tone which will be Widely distributed and will not be confined solely to the opening 9.

Obviously, the device might be modified as to its exact form and embellishment or arrangement of orifices without departing from the spirit or intent of the invention, which contemplates in the main a bell of spheroidal form composed of semi-spheroidal sections pressed together with an annular stiffening ring adjacent to their meeting edges.

Obviously, the parts might be formed and brazed or soldered together although it is preferred to press them up as described to secure the full advantage of the stiffening benefit secured from the down-turned lips and shoulders. This, in effect, gives two rings of annular form, one Within the other and closely united by pressing the metal into intimate contact.

What I claim as my invention and desire to secure by Letters Patent is:

1. A signaling horn having a sound producing mechanism and a horn consisting of a substantially short drawn tapered cylindrical tube having its smaller end secured appurtenant to the sound producing mechanism and with a hollow spheroidal member provided with a neck secured Within its larger end, said spheroidal member having an opening in axial alinement with the larger end of the tapered tube, said opening being smaller in diameter than the opening of said tube.

2. A signaling horn having a sound-producing mechanism and a horn consisting of a gradually tapered tube with the smaller end of said tube secured appurtenant to the sound producing mechanism and with a hollow spheroidal casing secured to the larger end thereof, said spheroidal casing having a neck by which it is secured within the tube With a clear opening of smaller area than the neck diametrically opposite said neck and perforations in the spheroidal casing above the line of opening of the neck and the spheroidal casing.

3. A signaling horn having a sound producing mechanism and a horn consisting, of a gradually tapered tube With the smaller end of said tube secured appurtenant to the sound producing mechanism and with a hollow spheroidal casing secured to the larger end thereof, said spheroidal casing secured to the tube and with a clear open ing diametrically opposite said neck smaller in diameter than the opening of said neck, and provided with series of perforations through its walls intermediate the neck and opening whereby the vibrated air may pass through the spheroidal casing.

4. A device of the character described having a horn of comparatively thin metal comprising a gradually tapered tube having at its larger end a hollow spheroidal member reinforced about its medial line, an integral neck upon the spheroidal member fitting the outer end of the tapered tube, and an opening through the spheroidal member opposite to but axially alined with reference to the neck, said opening having a lesser area than the opening of the neck, and perforations through said spheroidal member on opposite sides of the medial reinforce and located outside the lines between the neck and opening of the spheroidal member.

5. A horn consisting of a tubular member having at its outer end a hollow spheroidal member having an opening alined with but smaller in diameter than the tubular memher and provided with a series of perforations adjacent to the said opening and a series of perforations adjacent to the neck.

' MAYO S. PURPLE. l/Vitne sses:

CLARA E. DIOKSON, AUGUSTA H. VVoLrE.

Copies of this patentmay be obtained for five cents each, by addressing the Commissioner of yatents,

Washington, D. C. 

